Carbureter.



H. G. CHATAIN CARBURE/TER. APPucATloN FILED/:une 21ml.

Patented Ma1,21,1916.

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Inventor: Henri Y mmvmmm i certain newr mi www@ pasging v combstiblejatii reservoiri f the larger calflurejgl rsimMedan@` lower level uthnfthe 250.l` Thisinietis ,onnected to the. or'ank case 19 `of thef engine 'by 'conduit i912. The chief purposes of this is t@ remove the iubicatiiig oil fog from/the crank case andaifsotxiV greats fi slight .Vacuum thereitoxpreverit leakage gf iui'sicani; yfrom -theicraiikcasg The nle 19 enters at the bottom of Chamber aover `WifiichUna afr'. must How inpassing turi i3 and thisdipsf into the lowel'f giie carbureten i wfii 20a. acts, dam t@ preventsuch.

laws `in thebase 0f the hariiureterma'y be' The tubei iS xjnznectedl with fh@,intakgL 'i pipe l byI a" length of piping 21,` atthe up# check waive 23. Thel 'stem 24: of thisvalvezis moved when desired. The valve is loaded by a spring 27housed in the tubular stein 24: and adjustable -in tension by a plug screwed into the upper end of 'theslee'ie 25.

The operation is as follows: lVhen the en-y 'gine is started, the small carbureter alone supplies the explosi. ve mixture tothe intake pipe 1, but with the wider opening of the throttle the engine acquires .speed and ther vacuum in the intake pipe becomes greater,

'until atlengthllthe tension ot' the spring 27' is overcome, a d the check valve rises, permitting. the' larger carbureter to kcome into service. The carbureters then act in parallel until the load on the engine` drops to so small an amount' that the consequent throttling` of the mixture lowers the suction to a point where the spring 27'closes the check -valve and shuts oill the large car- 20 bureter. -Under some circumstances it may be desirable to shutoff the small carbureter when running, using the large one alone; but usually I preferv to operate them simultaneously when the load becomes large enough to bring the larger one into service.

It will be noted that the two carbureters are connected to 4the intake pipe 1, one in advance' o the other as regards the direc'- -tion of flow to the engine', the smaller carbureter beingr in advance of thelarger.V Also that the direction of How from both carburetei's is changed 4through an angle of 90o in flowing to the engine, the mixture-from the larger carbureter .passing over the' out- -letlopening 3 of the smaller carbureter.`

". Such an arrangement hasthe advantage of plurality of air inlets for the large-carbu@ securing a very uniform `mixture of the charges from the two carbureters and hence a resultant uniform mixture.l This would not otherwise be the case as the smaller carl bureter is set' for a milch richer mixture than the larger one as stated above. n

What I claim as new and desire to secure by Lette-rs Patent ofthe United States, is,-

reter, and a valve which is operated to automatically bring thelarge carbm'eter into action when-the suction reaches a predetermined value. I i

2. The combination with the intake pipe of an internal combustion engine, of two 4carbureters connected thereto through separatev openings, one of. said openings being in /fuelto 'the advance ofthe other as regards the direction of flow through the intake pipe, said carbureters Yeach having a Venturi throat. and a noazle for the throat forsupplying a combustible mixture thereto, and arranged at dillerent levels, means for supplying liquid fuel to the upper carbureter, an overilow conifeying fuel from theV upper carbureter .to the lower carbureter, means for any surplus fuel from the lower carbureter, and air inlets for said carbureters.

discharging J 3. The combination with the intake pipe` of an internal combustion engine, of a small and a large carbureter, each carbureter consisting of a Venturi throat through which air .is drawn by the suction action of the engine, a fuel reservoir surrounding' the throat, and a nozzle for delivering fuel from the reservoir to the throat, means forsup-` plying fuel to the reservoirs in seriesan open conduit connecting the small carbu` roter to the intake pipe, a conduit connecting the large ca'ibiireter to the'intake pipe, said first named conduit being connected to the intake pipe in advance of the other as regai-ds the direction of flowv therethrough, and a valve in the last conduit which opens when the suction reaches a. predetermined value.

l. vThe combination with the intake pipe of an internal combustion engine, ofA a small carbureter and a large cai'bureter arranged s-s l at dilferentfllevels,.said carbu'ieters being set so that .the small carbureter supplies a rich mixture and the large carburetor a relatively lean mixture, means for supplying-,liquid vance of that connecting the larger as regards the direction of How through the in. take pipe.

. A lcarbureter system 'comprisinga relaf tively large carbureter having-a Venturi throat surrounded bythe liquid in the carbureter, a conduit leading iipwardfrom said Ithi-oat, ay conduit extending Y at an angle to tliecoiiduit 'aforesai'dinto whichA the latter opens, a. springactuated valve .removable through the",opposite.,wall of` the sefc'on'd: conduitadaptedto close the opening f the .first conduit thereinto until the 'suction on vit attains a certain magnitude, removable through ,said ,Wall', bui-eter opening'. into the. 5 se cond mentioned conduit'beyond said valve and' located above said larger earbureter, andan vo'verlovvpipe l upper cai-bureter, an overflowcoiiveyiiuofuel from the upper to the lower :ai-bureter, means for discharging any'surplus fuel from the lower carbureter, and separate conduits connecting the two carbureters to, the intake pipe, the conduit con- 5 iiectiiig the smaller carbureter being in adsaid-.valvey being.

ragsinaller carj iis connecting it with Vthe lower carbureter yfor i supplying fuel tothefliittei. i. carbureter'comprisin a casing, partition wallsytherein forminga. fuel reservoir,

lil

and a Venturi throat opening downward inlets for air openin into'the casing, one into the interior of `the csingg a pluralitynof 'of said inlets bein t rough the lower wall inlets for-airV opening'ito the .casing at one thereof, and a wal in the casing forming a 15 side of said throatone' ojgad'd inlets opendam to prevent fuel from leaking from the 5 ing 'through the endof the casin and casing into said inlet in the lower wall.

the other-s through the upper and ower In witness whereof, I have hereunto set walls thereof,' and valve means `for oon-1` my hand this 21st day of June, 1911.

.'trollng ysaid inlets. Y .HENRI G. CHATIN.'

y l A carbur'eter'- comprising a casing, par- 10 titlon walls thereln forming a fuel reservoir, Witnees:

and a Vent'ri throat opening downward BENJAMIN B. HULL, into the interior of the casing, a plnrality of Maximum* E. lloonmnr 

